Features 1 Multi layer Material The Protective Box is composed of 3 layers including 900D oxford cloth honeycomb and flame retardant cloth with silicone coating lightweight high density and fireproof 2 Extended Smoke Pipe The smoke exhaust pipe can shrink to 50cm at the shortest and stretch to 2m at the longest It s convenient to pull the pipe to the open space for smoke exhaust 3 Large Space E1 protective box area up to 790 810 410mm 31 1×31 9×16 1in large enough to compatible with 99 semiconductor laser engravers in the market 4 Smooth Air Inlet And Outlet Design With enlarge air inlet which greatly improve the efficiency of air circulation in the box and avoid low pressure effects 5 Open to Use The box is foldable and easy to store and portable to carry to the school office studio etc Any problem please contact our store without hesitation Honor to serve you Specification Model E1Product Size 790 810 410mm 31 1×31 9×16 1inVoltage 100 240V US UK EU AU Package Included 1 x Protective box1 x Exhaust hose1 Metal mesh cover1 x Exhaust fan1 x DC12V power supply4 x M4 50 screwsNut combination1 x Throat Hoop1 x Flange Fan1 x H3 Allen Key1 x Flat blade Screwdriver